Answer:
We need to investigate our daily household water use because if we do, then we know how much water we are using, which is helpful for two things. For one, there is knowing how much you use for your water bills, to make sure you don't over spend what you can't pay, and then there is also knowing it for water conservation. For example, if you are in a drought, then you want to make sure that you don't overuse the amount of water you have.
Step-by-step explanation: